Product manual

VTrak E-Class Product Manual
226
For SAS drives:
• Highlight Write Cache and press the spacebar to toggle between
Enabled and Disabled.
• Highlight Read Look Ahead Cache and press the spacebar to toggle
between Enabled and Disabled.
• Highlight CmdQueuing and press the spacebar to toggle between
Enabled and Disabled.
• Highlight MediumErrorThreshold and press the backspace key to
remove the current value, then type a new smaller value.
See the comments below.
• Highlight Read Cache and press the spacebar to toggle between
Enabled and Disabled.
4. Press Control-A to save your settings.
See “Viewing Physical Drive Information” below to determine which functions
your physical drives support.
Medium Error Threshold is the number of bad blocks tolerated before the
controller marks the drive as Dead. The default setting is 64 blocks. A setting
of zero disables the function. When disabled, no drives are marked offline
even when errors are detected.
Viewing Physical Drive Information
To view information about a physical drive:
1. From the Main Menu, highlight Physical Drive Management and press
Enter.
2. Highlight the physical drive you want and press Enter.
Basic information displays.
3. Highlight Advanced Information and press Enter.
Advanced information displays.
Viewing Physical Drive Statistics
To view the statistics for the selected physical drive:
1. From the Main Menu, highlight Physical Drive Management and press
Enter.
2. Highlight the physical drive you want and press Enter.
3. Highlight Physical Drive Statistics and press Enter.
Clearing Statistics
To clear physical drive statistics, see “Clearing Statistics” on page 305